From 86fc2ca8909eb686e2ad751acb0f0eaf706d9d5e Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Fri, 13 Jan 2012 17:30:17 +0100
Subject: * apt-pkg/deb/dpkgpm.cc: - check if dpkg supports multiarch with
--assert-multi-arch and if it does be always explicit about the
architecture
---
apt-pkg/deb/dpkgpm.cc | 73 ++++++++++++++++++++++++++++++++++++---------------
1 file changed, 52 insertions(+), 21 deletions(-)
(limited to 'apt-pkg/deb')
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 7c0ed5639..4dc0baa50 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -108,7 +108,7 @@ ionice(int PID)
{
if (!FileExists("/usr/bin/ionice"))
return false;
- pid_t Process = ExecFork();
+ pid_t Process = ExecFork();
if (Process == 0)
{
char buf[32];
@@ -829,6 +829,40 @@ static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
*/
bool pkgDPkgPM::Go(int OutStatusFd)
{
+ // Generate the base argument list for dpkg
+ std::vector<const char *> Args;
+ unsigned long StartSize = 0;
+ string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
+ Args.push_back(Tmp.c_str());
+ StartSize += Tmp.length();
+
+ // Stick in any custom dpkg options
+ Configuration::Item const *Opts = _config->Tree("DPkg::Options");
+ if (Opts != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ Args.push_back(Opts->Value.c_str());
+ StartSize += Opts->Value.length();
+ }
+ }
+
+ size_t const BaseArgs = Args.size();
+ // we need to detect if we can qualify packages with the architecture or not
+ Args.push_back("--assert-multi-arch");
+ Args.push_back(NULL);
+
+ pid_t dpkgAssertMultiArch = ExecFork();
+ if (dpkgAssertMultiArch == 0)
+ {
+ execv(Args[0], (char**) &Args[0]);
+ _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
+ _exit(2);
+ }
+
fd_set rfds;
struct timespec tv;
sigset_t sigmask;
@@ -905,27 +939,20 @@ bool pkgDPkgPM::Go(int OutStatusFd)
// create log
OpenLog();
- // Generate the base argument list for dpkg
- std::vector<const char *> Args;
- unsigned long StartSize = 0;
- string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
- Args.push_back(Tmp.c_str());
- StartSize += Tmp.length();
-
- // Stick in any custom dpkg options
- Configuration::Item const *Opts = _config->Tree("DPkg::Options");
- if (Opts != 0)
+ bool dpkgMultiArch = false;
+ if (dpkgAssertMultiArch > 0)
{
- Opts = Opts->Child;
- for (; Opts != 0; Opts = Opts->Next)
+ int Status = 0;
+ while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
{
- if (Opts->Value.empty() == true)
+ if (errno == EINTR)
continue;
- Args.push_back(Opts->Value.c_str());
- StartSize += Opts->Value.length();
+ _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
+ break;
}
+ if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
+ dpkgMultiArch = true;
}
- size_t const BaseArgs = Args.size();
// this loop is runs once per operation
for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
@@ -965,14 +992,17 @@ bool pkgDPkgPM::Go(int OutStatusFd)
if (J - I > (signed)MaxArgs)
{
J = I + MaxArgs;
- Args.reserve(MaxArgs + 10);
+ unsigned long const size = MaxArgs + 10;
+ Args.reserve(size);
+ Packages.reserve(size);
}
else
{
- Args.reserve((J - I) + 10);
+ unsigned long const size = (J - I) + 10;
+ Args.reserve(size);
+ Packages.reserve(size);
}
-
int fd[2];
pipe(fd);
@@ -1047,7 +1077,8 @@ bool pkgDPkgPM::Go(int OutStatusFd)
continue;
if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
continue;
- if (I->Pkg.Arch() == nativeArch || !strcmp(I->Pkg.Arch(), "all"))
+ // We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
+ if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch || !strcmp(I->Pkg.Arch(), "all")))
{
char const * const name = I->Pkg.Name();
ADDARG(name);
--
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